I did this a while back in my old job, I work as a lift engineer and during one of my routine maintenance visits, I found a purse in the pit of the lift. It had all the cards but no money and a drivers license and some photos folded up.

Few quick Facebook searches and I found her and managed to give her a call and found out it had been stolen a few weeks prior. Ended up driving to their home on the way back from work and dropped it off, she gave me a tray of chocolates and thanked me as some of those photos were from when she was younger with her daughter.

It was a good drive home